One or more of the letters of a word standing for the whole word.

2. What is the signification of A.C.S.?

American Colonization Society.

3. Give meaning A.B.C.F.M.

American Board of Commissioners for Foreign Missions.

4. What is the signification AAA.?

Amalgamation.

5. What is the signification of Ang.-Sax.?

Anglo-Saxon.

6. Give signification of A.T.